Finding the Fourth Proportional to 136,763.22, 188,751.09 and 76,346.40
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Solution
The fourth proportional to 136,763.22, 188,751.09 and 76,346.40 is: 105,367.99
Step by Step Solution
- Step 1: Write the proportion equation
136,763.22 : 188,751.09 = 76,346.40 : x - Step 2: Convert to fraction form
136,763.22/188,751.09 = 76,346.40/x - Step 3: Cross multiply
136,763.22x = 188,751.09 × 76,346.40 - Step 4: Simplify right side
136,763.22x = 14,410,466,217.58 - Step 5: Solve for x
x = 14,410,466,217.58/136,763.22 - Step 6: Final answer
x = 105,367.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.